Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
In a medium mixing bowl, combine 0.75 cup of Greek yogurt, flour, baking powder, and sea salt, stirring until a thick dough forms.
Transfer the dough to a lightly floured surface and knead for 1-2 minutes until smooth and no longer sticky.
Roll the dough into long ropes about 1 inch thick, then use a knife to cut them into 1-inch bite-sized pieces.
Place the bites on the prepared baking sheet, brush the tops with the whisked egg white, and sprinkle with garlic powder, dried parsley, and half of the parmesan cheese.
Bake for 12-15 minutes until the pretzel bites are golden brown and have a slight spring when touched.
While the bites bake, whisk together the remaining 0.5 cup of Greek yogurt, lemon juice, minced garlic clove, and the rest of the parmesan cheese to create a zesty dipping sauce.
Serve the warm pretzel bites immediately alongside the chilled garlic-parmesan dip.